acdlite

function pureRenderMixin(Component) {
  Component.prototype.shouldComponentUpdate(nextProps, nextState) {
    return !shallowEqual(this.props, nextProps) ||
           !shallowEqual(this.state, nextState);
  }
  
  return Component;
}

class MyComponent extends React.Component {}

aldendaniels

React now supports the use of ES6 classes as an alternative to React.createClass().

React's concept of Mixins, however, doesn't have a corollary when using ES6 classes. This left the community without an established pattern for code that both handles cross-cutting concerns and requires access to Component Life Cycle Methods.

In this gist, @sebmarkbage proposed an alternative pattern to React mixins: decorate components with a wrapping "higher order" component that handles whatever lifecycle methods it needs to and then invokes the wrapped component in its render() method, passing through props.

While a viable solution, this has a few drawbacks:

1. There's no way for the child component to override functionality defined on the higher order component.

giannisp

After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

Database files have to be updated before starting the server, here are the steps that had to be followed:

# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
brew unlink postgresql
brew install [email protected]
brew unlink [email protected]
brew link postgresql